diff options
Diffstat (limited to 'configure.in')
| -rw-r--r-- | configure.in | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/configure.in b/configure.in index 48db5c39b56..3f195a65117 100644 --- a/configure.in +++ b/configure.in @@ -1170,11 +1170,27 @@ if test "$with_krb5" = yes; then AC_MSG_CHECKING(for krb5_free_unparsed_name) AC_TRY_LINK([#include <krb5.h>], [krb5_free_unparsed_name(NULL,NULL);], - [AC_DEFINE(HAVE_KRB5_FREE_UNPARSED_NAME, 1, [Define to 1 if you have krb5_free_unparsed_name]) + [AC_DEFINE(HAVE_KRB5_FREE_UNPARSED_NAME, 1, [Define to 1 if you have krb5_free_unparsed_name.]) AC_MSG_RESULT(yes)], [AC_MSG_RESULT(no)]) fi +# On PPC, check if assembler supports LWARX instruction's mutex hint bit +case $host_cpu in + ppc*|powerpc*) + AC_MSG_CHECKING([whether assembler supports lwarx hint bit]) + AC_TRY_COMPILE([], + [int a = 0; int *p = &a; int r; + __asm__ __volatile__ (" lwarx %0,0,%1,1\n" : "=&r"(r) : "r"(p));], + [pgac_cv_have_ppc_mutex_hint=yes], + [pgac_cv_have_ppc_mutex_hint=no]) + AC_MSG_RESULT([$pgac_cv_have_ppc_mutex_hint]) + if test x"$pgac_cv_have_ppc_mutex_hint" = xyes ; then + AC_DEFINE(HAVE_PPC_LWARX_MUTEX_HINT, 1, [Define to 1 if the assembler supports PPC's LWARX mutex hint bit.]) + fi + ;; +esac + # Check largefile support. You might think this is a system service not a # compiler characteristic, but you'd be wrong. We must check this before # probing existence of related functions such as fseeko, since the largefile |